This 12V 50A alternator is designed for select MerCruiser Racing sterndrive applications, including 500EFI and 575 SCi. It cross-references Mercury/MerCruiser OEM part number 8M0064021 and is supplied under Recmar reference REC8M0064021 to help restore correct charging performance when the correct match is confirmed.

Before ordering: fitment can vary by engine version and serial range. Confirm your engine model/serial and match the part number on the alternator currently fitted.

• Part type: Alternator
• Output: 12V / 50A
• Pulley: 4-groove (serpentine) pulley
• Fits (as listed): MerCruiser Racing Sterndrive 500EFI, 575 SCi
• OEM reference: Mercury/MerCruiser 8M0064021
• Other OEM cross-references (Mercury/MerCruiser): 834832, 834832T2, 857006A3 (superseded to 889955A04), 857006T / 857006R01 (superseded to 889955A03), 875285T1, 881248T, 889955A03, 889955A04, 8M0033841, 8M6000804, 8M8023423
• Brand: Recmar (aftermarket replacement)
• SKU: REC8M0064021

Fitment varies by engine package and year. Always confirm compatibility using your engine details and the reference numbers above before purchase.